8216820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{239}}^1$

素因数の和:445

約数の個数: 72

約数和(自身を含む): 25159680

約数和(自身を除く): 16942860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 191, 239, 382, 478, 573, 717, 764, 955, 956, 1146, 1195, 1434, 1719, 1910, 2151, 2292, 2390, 2865, 2868, 3438, 3585, 3820, 4302, 4780, 5730, 6876, 7170, 8595, 8604, 10755, 11460, 14340, 17190, 21510, 34380, 43020, 45649, 91298, 136947, 182596, 228245, 273894, 410841, 456490, 547788, 684735, 821682, 912980, 1369470, 1643364, 2054205, 2738940, 4108410, 8216820]

約数ペア:

[(1, 8216820), (2, 4108410), (3, 2738940), (4, 2054205), (5, 1643364), (6, 1369470), (9, 912980), (10, 821682), (12, 684735), (15, 547788), (18, 456490), (20, 410841), (30, 273894), (36, 228245), (45, 182596), (60, 136947), (90, 91298), (180, 45649), (191, 43020), (239, 34380), (382, 21510), (478, 17190), (573, 14340), (717, 11460), (764, 10755), (955, 8604), (956, 8595), (1146, 7170), (1195, 6876), (1434, 5730), (1719, 4780), (1910, 4302), (2151, 3820), (2292, 3585), (2390, 3438), (2865, 2868)]